Hybrid nonlinear model of the angular vestibulo-ocular reflex

Ranjbaran, Mina; Galiana, Henrietta L.

doi:10.1109/embc.2013.6610827

Cited by 3 publications

(1 citation statement)

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“…Such a model allows new interpretations of the underlying mechanisms in the VOR system and explains contradictory observations in experiments. Preliminary results are presented in Ranjbaran and Galiana ( 2013b ).…”

Section: Introductionmentioning

confidence: 99%

Hybrid model of the context dependent vestibulo-ocular reflex: implications for vergence-version interactions

Ranjbaran

Galiana

2015

Front. Comput. Neurosci.

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The vestibulo-ocular reflex (VOR) is an involuntary eye movement evoked by head movements. It is also influenced by viewing distance. This paper presents a hybrid nonlinear bilateral model for the horizontal angular vestibulo-ocular reflex (AVOR) in the dark. The model is based on known interconnections between saccadic burst circuits in the brainstem and ocular premotor areas in the vestibular nuclei during fast and slow phase intervals of nystagmus. We implemented a viable switching strategy for the timing of nystagmus events to allow emulation of real nystagmus data. The performance of the hybrid model is evaluated with simulations, and results are consistent with experimental observations. The hybrid model replicates realistic AVOR nystagmus patterns during sinusoidal or step head rotations in the dark and during interactions with vergence, e.g., fixation distance. By simply assigning proper nonlinear neural computations at the premotor level, the model replicates all reported experimental observations. This work sheds light on potential underlying neural mechanisms driving the context dependent AVOR and explains contradictory results in the literature. Moreover, context-dependent behaviors in more complex motor systems could also rely on local nonlinear neural computations.

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Section: Introductionmentioning

confidence: 99%

Hybrid model of the context dependent vestibulo-ocular reflex: implications for vergence-version interactions

Ranjbaran

Galiana

2015

Front. Comput. Neurosci.

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Identification of the vestibulo-ocular reflex dynamics

Ranjbaran

Galiana

2014

2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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The vestibulo-ocular reflex (VOR) plays an important role in our daily activities by enabling us to fixate on objects during head movements. Modeling and identification of the VOR improves our insight into the system behavior and helps in diagnosing various disorders. However, the switching nature of eye movements, including the VOR, makes the dynamic analysis challenging. In this work we are using integration of subspace and prediction error methods to analyze VOR dynamics. The performance of the method is evaluated using simulation studies and experimental data.

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Linear Mathematical Model of Relation between Extraocular Muscles and Vestibular System

Minyailo,

Kruchinina

2024

Moscow Univ. Mech. Bull.

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Hybrid nonlinear model of the angular vestibulo-ocular reflex

Cited by 3 publications

References 12 publications

Hybrid model of the context dependent vestibulo-ocular reflex: implications for vergence-version interactions

Hybrid model of the context dependent vestibulo-ocular reflex: implications for vergence-version interactions

Identification of the vestibulo-ocular reflex dynamics

Linear Mathematical Model of Relation between Extraocular Muscles and Vestibular System

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